User blog comment:LegionZero/Nero's Parallels to Vergil and Sparda/@comment-72.218.90.59-20140901060831/@comment-6769189-20140910054355

1) My assumption is not an opinion. It’s supported by the fact that Vergil has been described in canon material as rather cold and didn't care for humans or his own humanity, and it has not been suggested to have been otherwise since they were kids.

2) He wanted power to make up for his lack of strength to protect his mother. I have looked into the theory of Vergil wanting to avenge his mother and considered it a possibility at one point. This however can't be true as Vergil was not present when Eva died. He was far from the house. Dante was the only one to actually see his mother die and witness the following discussion between the demon that killed her and who sent him/them. none of his dialogue with any other characters implies revenge as a motive.

3) The way Vergil spoke of Mundus at the end of DMC3 implied he only knew who Mundus was, not that he wasn't responsible for Eva’s death. He wasn't upset or enraged at the sight of Mundus, he was excited for a challenge, and that’s all he made a note of. You are also taking Dante's statement out of context Dante hadn't come to the realization that Mundus had killed Eva until he killed Griffon. For at least 9 years he was searching and hunting to find out who killed her.